Publications related to Isogeometric methods for computational electromagnetics: B-spline and T-spline discretizations

Cardinal Hermite Exponential Splines: Theoretical Insights and Applications to Active Contours

Cardinal Hermite exponential spline functions are a generalization of the classical cardinal Hermite polynomial splines. In this work we consider the 4-dimensional space

ε _{ 4 }

= {1, x,

e ^{ \alpha x }

,

e ^{ -\alpha x }

} with α ∈ $ ℝ ^{ + } ...

SMAI-SIGMA2014

Evolution of Covalent Networks under Cooling: Contrasting the Rigidity Window and Jamming Scenarios

Matthieu Wyart

We study the evolution of structural disorder under cooling in supercooled liquids, focusing on covalent networks. We introduce a model for the energy of networks that incorporates weak noncovalent interactions. We show that at low temperature these intera ...

American Physical Society2014

Wave dispersion in periodic post-buckled structures

Alessandro Spadoni, Florian Paul Robert Maurin

Wave propagation in pinned-supported, post-buckled beams can be described with the Korteweg de Vries (KdV) equation. Finite-element simulations however show that the KdV is applicable only to post-buckled beams with strong pre-compression. For weak and mod ...

Elsevier2014

Mathematical analysis of variational isogeometric methods

Annalisa Buffa, Rafael Vazquez Hernandez

This review paper collects several results that form part of the theoretical foundation of isogeometric methods. We analyse variational techniques for the numerical resolution of PDEs based on splines or NURBS and we provide optimal approximation and error ...

2014

Desiccation shrinkage of non-clayey soils: multi-physics mechanisms and a microstructural model

Lyesse Laloui, Hervé Péron

Analysis of macroscopic desiccation shrinkage experiments indicates that most, but not all of the shrinkage during drying occurs while soil is still saturated. Shrinkage practically ceases and air starts to penetrate the soil, when the water content is sti ...

Wiley-Blackwell2013

A Methodology for Embedded Classification of Heartbeats Using Random Projections

David Atienza Alonso, Giovanni Ansaloni, Ruben Braojos Lopez

Smart Wireless Body Sensor Nodes (WBSNs) are a novel class of unobtrusive, battery-powered devices allowing the continuous monitoring and real-time interpretation of a subject’s bio-signals. One of its most relevant applications is the acquisition and anal ...

2013

Hessian-Based Norm Regularization for Image Restoration With Biomedical Applications

Michaël Unser, Aurélien Bourquard, Stamatios Lefkimmiatis

We present nonquadratic Hessian-based regularization methods that can be effectively used for image restoration problems in a variational framework. Motivated by the great success of the total-variation (TV) functional, we extend it to also include second- ...

IEEE2012

Modeling, design and characterization of a very wideband slot antenna with reconfigurable band rejection

Julien Perruisseau-Carrier

An antenna exhibiting a very wide bandwidth with reconfigurable rejection within the band is presented. The proposed topology is versatile in terms of the number of available antenna states and location of the rejection frequencies, and also allows the ope ...

Institute of Electrical and Electronics Engineers2010

Self-Similarity: Part I—Splines and Operators

Michaël Unser, Thierry Blu

The central theme of this pair of papers (Parts I and II in this issue) is self-similarity, which is used as a bridge for connecting splines and fractals. The first part of the investigation is deterministic, and the context is that of L-splines; these are ...

IEEE2007

Cavitation Bubble Dynamics inside Liquid Drops in Microgravity

Mohamed Farhat, Nicolas Dorsaz, Claude Nicollier, Danail Obreschkow, Philipp Kobel, Aurèle De Bosset

We report a fundamental study of single cavitation bubbles inside quasi-spherical water drops produced in microgravity (42nd ESA parabolic flight campaign, 8th ESA student parabolic flight campaign). High-speed imaging revealed implications of isolated, fi ...

2006

Isogeometric methods for computational electromagnetics: B-spline and T-spline discretizations

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Cardinal Hermite Exponential Splines: Theoretical Insights and Applications to Active Contours

Evolution of Covalent Networks under Cooling: Contrasting the Rigidity Window and Jamming Scenarios

Wave dispersion in periodic post-buckled structures

Mathematical analysis of variational isogeometric methods

Desiccation shrinkage of non-clayey soils: multi-physics mechanisms and a microstructural model

A Methodology for Embedded Classification of Heartbeats Using Random Projections

Hessian-Based Norm Regularization for Image Restoration With Biomedical Applications

Modeling, design and characterization of a very wideband slot antenna with reconfigurable band rejection

Self-Similarity: Part I—Splines and Operators

Cavitation Bubble Dynamics inside Liquid Drops in Microgravity

Wave dispersion in periodic post-buckled structures

Desiccation shrinkage of non-clayey soils: multi-physics mechanisms and a microstructural model

A Methodology for Embedded Classification of Heartbeats Using Random Projections

Hessian-Based Norm Regularization for Image Restoration With Biomedical Applications

Cavitation Bubble Dynamics inside Liquid Drops in Microgravity

Cardinal Hermite Exponential Splines: Theoretical Insights and Applications to Active Contours

Self-Similarity: Part I—Splines and Operators

Evolution of Covalent Networks under Cooling: Contrasting the Rigidity Window and Jamming Scenarios

Mathematical analysis of variational isogeometric methods

Modeling, design and characterization of a very wideband slot antenna with reconfigurable band rejection